If we can see the URL, it is going to the Auth directory under OWA which is why https://webmail.GoldenFive.net/owa/ is not redirecting to the ADFS.

This is by design and not a bug or issue.

If the user will go to this URL then they will get the OWA login page and after login, everything will be blank. This may make your users complaining and all of a sudden you might have thousands of tickets. So, we should consider this as part of your Azure MFA securing configuration of OWA and ECP.